The Internet should be Unrated and thus Adults Only by default. Just like public spaces. (Would you allow an 8 year old to wander New York City unattended? Arguments can be made for more controlled spaces but...)
Have a website and want the chance for kids to see it? Advertise in the headers that it's moderated and intended to be a given rating. Various indexers can pick that up. Complaints can be forward to relevant government agencies (E.G. for a US based website the FTC, false advertising), or as usual other agencies for harder crimes.
Parents can mark computer accounts as Child accounts and Browsers configured to follow a set of list filtering rules selected by the parent or current guardian (E.G. schools).
So again. Internet == Unrated Free Zone -- Child Mode == Allow List filtered content.
Have a website and want the chance for kids to see it? Advertise in the headers that it's moderated and intended to be a given rating. Various indexers can pick that up. Complaints can be forward to relevant government agencies (E.G. for a US based website the FTC, false advertising), or as usual other agencies for harder crimes.
Parents can mark computer accounts as Child accounts and Browsers configured to follow a set of list filtering rules selected by the parent or current guardian (E.G. schools).
So again. Internet == Unrated Free Zone -- Child Mode == Allow List filtered content.